fischer Power-Full

fischer Power-Full - The powerful

The advantages at a glance 

1.) Minimum gap risk 

  • The narrow cylinder head is hardly visible and reduces the expansion pressure.
  • Easy and deep countersink of the head. 

2.) High screw protection 

  • The special coating ensures a better corrosion protection.
  • The  zinc flake coating prevents an embrittlement through hydrogen included as standard during the production. 

3.) Maximum load-bearing capacity

  • The consistent thread over the hole screw length ensures an optimal force transmission. 

4.) Time- and material saving

  • The drill bit enables a screw connection without drilling out of the centre and gives a guidance during screwing in. 
  • The gap risk is  diminished and the screw-in resistance will be significantly reduced.
  • Small axial- and edge spacing are possible and permitted. 

New possibilities

Main- / secondary girder connections (Stump)

Standard solution

So far, main-/ secondary girder connections are implemented e.g. through steel sheet mouldings (joist hangers). This is a complex, visible and partly unattractive connection. 

Optimised solution with fischer Power-Full screws

Two fully threaded screws fischer Power-Full are ... in an angle of 45 degrees and are screwed crossed. Thereby, the screws receive also shear loads. Therefore, main- and secondary girders can be connected fast and invisible. 

Main- / secondary girder connections (cone-reinforcement)

Standard solution

The traditional connection can open itself and lead to larger shifts, because the connection has no guaranteeing tensile strength. Secondary- and main girders can finally rip.

Optimised solution with fischer Power-Full screws

Through the restructuring with the help of the fischer Power-Full a belated, stiff and tensile strong connection can be restored and again guarantee a safe force transmission. 

Main- / secondary girder connections (dove tail-reinforcement)

Standard solution

The sole connection with dove tail is hard to measure and doesn't show enough stiffness. 

Optimised solution with fischer Power-Full screws

The interaction of dove tail- and Power-Full-connection enables the combination of simple installation and efficient connection. 

Rafter-Purlin-Connection

Standard solution

Rafters and purlins are either connected with rafter nails (little load-bearing capacity) or with partial-thread screws. Also time-consuming rafter-purlin-anchors (steel sheet mouldings), which need to be nailed out, are being used. 

Optimised solution with fischer Power-Full screws

Through the vertically into the rafter screwed fischer Power-Full, the load-bearing capacity will increase significantly. Also head draught, which occurs due to a wind suction to rafter nails or partial-thread screws, will be prevented. Another benefit is the time saving in comparison to rafter-purlin-anchors during the installation.

Reinforcements from Notches / Overlaps

Standard solution

Unreinforced notches are holding the risk of cracks or breakdowns at the notched coating. The notches are getting strengthened with glued-laminated timber material boards or glued threaded rods. 

Optimised solution with fischer Power-Full screws

The shear reinforcement with fischer Power-Full enables a significant higher load intake. The smaller screw heads ensure an attractive, rarely visible timber construction. 

Breakthroughs

Standard solution

Breakthroughs in ceiling joists and girders are often necessary, which increase the danger of shear cracks / -breakdowns. This breakthroughs are getting strengthened with glued-laminated timber material boards or glued threaded rods. 

Optimised solution with fischer Power-Full screws

The shear reinforcement with fischer Power-Full is also allowing here a significant higher load intake over unreinforced cross sections. This ensures the reinforcement of the wooden beam near the breakthrough across to the wood fibre direction. Additionally, the installation effort can be significantly reduced in comparison to conventional reinforcements. 

Girder false edge / -reinforcement

Standard solution

Due to a belated increase of the dead load of the ceiling, it can come to massive deflections and increased vibration problems of old wood beam ceilings, especially in old buildings. This problem is solved by "anchoring" the girders together, e.g. through wood inserts or plugs with special designs. 

Optimised solution with fischer Power-Full screws

The consisting girder will be connected through inclined screwed Power-Full screws with an additional wooden beam. Therefore, its load-bearing capacity will increase and the deformation behaviour will be reduced. 

Shear reinforcement for classic main- / secondary girder connections

Standard solution

The conventional main- / secondary beam connections without shear reinforcement have a high danger of development of shear cracks and finally also of shear breakdowns. 

Optimised solution with fischer Power-Full screws

The fully threaded screw fischer Power-Full increases the shear load-bearing capacity of the main girder significantly, by strengthening the main girder across to the wood fibre direction. 

Coupled purlins

Standard solution

Coupled purlins from hall roofs are interconnected very complex by plugs with a special design (e.g. GEKA, Appel) and threaded bolts. 

Optimised solution with fischer Power-Full screws

Coupled purlins can be connected rigid, fast and simple by Power-Full screws. Therefore, hall roofs can be created cheaper. 

Coating reinforcements / lateral pressure reinforcement

Standard solution

To counteract the low lateral pressure load capacity especially on coatings across to wood fibre, larger beam cross sections or the usage of hard wood is needed. 

Optimised solution with fischer Power-Full screws

Due to the screw connection across to the course of the wood fibre, the fully threaded screw fischer Power-Full increases the lateral pressure load capacity of the wood, without enlarging the beam cross section. The material costs can be significantly reduced. 

Thrust wood fixing (for on-roof insulation)

Standard solution

Thrust woods are fixed with partial-threaded screws. Therefore, many fixing points and thus also larger thrust woods are needed.  

Optimised solution with fischer Power-Full screws

Stiff connections are ensured by fewer fully threaded screws fischer Power-Full, which leads to shorter thrust woods. The screws are screwed-in in an angle of approx. 45 degrees into the thrust wood, to take the occurring thrust forces in. 

Restructuring

Standard solution

Many rafter- or beam heads in old buildings are defective. Mostly, either plugs with special designs have to be used or a complete dismantling has to be implemented for the beam restructuring.

Optimised solution with fischer Power-Full screws

The carrying beams are screwed-in simple and fast with lateral reinforcement straps, according to the application. A cost-intensive changing of damaged beams is therefore cancelled. 

Coating beams

Standard solution

The walls of houses in wooden framework construction are often only produced storey-high. As the ceiling joist location bears on the wood plate of the ground floor, the facade and the insulation are not continuous. Furthermore, the risk of belated building settlement increases.   

Optimised solution with fischer Power-Full screws

To optimise the exterior wall insulation, the walls are constructed continuously for various floors. The fixing of the coating beams can now be performed safe, displacement stiff and nearly invisible, thanks to fischer Power-Full. For an optimal load intake, the screw connections are mostly set in an angle of approx. 45 degrees.

Element connection / Wooden framework construction

Standard solution

The elements are contracted and connected with many partial-threaded screws.

Optimised solution with fischer Power-Full screws

With fully threaded screws, higher tension-/ pressure- and shear loads can be transmitted with fewer screws. For an optimal connection, the screw connection will be set in an angle between 30 - 90 degrees.